No, the herbs ONLY work in the digestive tract. You have to use a ZAPPER.
And we all had parasites long before the modern toxic age. It was just easier to control them with digestive tract solutions like cod liver and castor oil.
But they were there, and a lot of fiddle fuss methods were developed to deal with the ones who managed to eat their way out; far fewer though and sorta kinda manageable, because they didn't have a zapper to kill them. They were making do.
And who knows what worms are still in your cat's body. RX is a horrible way to get rid of anything. I'd bet those are too toxic to give humans but short lived pets they can get away with.
Wormwood is the best worm killer that's non toxic and doesn't kill you. The cartel is horrible at killing their pet targeted parasites--why would they want to kill their goose(s)? How else can they get their golden eggs??(Chemo, oncologists, diabetes supplies, and specialists, MS 'management drugs, IBS management--oh the list just goes on and on and on)